gravity
Could We Terraform a Black Hole?
Is there any possible way to take a black hole and terraform it to be a place we could actually…
Why is it Tough to Land on a Comet?
Why is landing on a comet so difficult and what does this tell us about future missions to comets and…
Could We Make Artificial Gravity?
It's a staple of scifi, and a requirement if we're going to travel long-term in space. Will we ever develop…
What’s This Ridge on Iapetus?
The strangest feature on Iapetus is the equatorial ridge. What could possibly create a feature like this? To paraphrase the…
How Could We Destroy the Moon?
What would it take to destroy our moon, and eliminate the enemy of stellar astronomy for all time? In the…
How Fast is Gravity?
How long would it take for the gravitational well created by the Sun to disappear, and the Earth and the…
Who Was Nicolaus Copernicus?
Polish astronomer Nicolaus Copernicus revolutionized astronomy by proposing that the Earth and other planets revolved around the Sun
How Can Black Holes Shine?
We hear that black holes absorb all the light that falls into them. And yet, we hear of black holes…
How Do We Know Dark Matter Exists?
Dark matter can't be seen or detected by any of our instruments, so how do we know it really exists?…
Could There Be Another Planet Behind the Sun?
If you've read your share of sci-fi, and I know you have, you've read stories about another Earth-sized planet orbiting…